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Finding the Fourth Proportional to 281,044.89, 387,845.01 and 153,717.75

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Solution

The fourth proportional to 281,044.89, 387,845.01 and 153,717.75 is: 212,132.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,044.89 : 387,845.01 = 153,717.75 : x
  2. Step 2: Convert to fraction form
    281,044.89/387,845.01 = 153,717.75/x
  3. Step 3: Cross multiply
    281,044.89x = 387,845.01 × 153,717.75
  4. Step 4: Simplify right side
    281,044.89x = 59,618,662,285.93
  5. Step 5: Solve for x
    x = 59,618,662,285.93/281,044.89
  6. Step 6: Final answer
    x = 212,132.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.